Strike



M. LOEB STRIKE Oct. Z5, 1955 Filed Jan. 4, 1955 Til.

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"` MORRIS L oEB BY JSM 3 ATTORNEY United States Patent O STRIKE Morris Loeb, New York, N. Y. Applikation January 4,1955, serial No. 479,733

3 claims. (c1.292-341.1s)

This invention relates to strikes for cooperation with the bolt or nose of a lock having a cam face and a locking face.

Among the objects of the present invention it is aimed to provide an improved strike bar for cooperation with the bolt or nose of a lock for a door or the like, which lock has a cam face and a locking face and which strike bar is provided with resilient means for yieldably maintaining the strike bar in anchoring or locking position but enabling the strike bar to be deflected when engaged by the cam face of a bolt to clear the bolt and in turn to express or extend the strike bar to cooperate with the locking face of the bolt in locking or anchoring position of the door after the bolt has been cleared.

These and other features, capabilities and advantages of the invention will appear for the subjoined detailed description of one specific embodiment thereof illustrated in the accompanying drawings, in which Fig. l is a fragmental side elevation partly in section showing a strike made according to the present invention with a lock in operative position.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3 is a bottom plan view of the strike with the cover plate removed.

Fig. 4 is a section on the line 4-4 of Fig. 3 with the cover plate in position.

Fig. 5 is an enlarged side elevation of the strike plate.

Fig. 6 is an exploded View of the strike including its cover plate.

In the embodiment shown, the strike 1 consists essentially of a casing 2, a pivotally mounted plate 3, an H- shaped flat spring 4, and a cover plate 5.

In use, the strike 1 is attached to the frame 7 to receive the spring pressed nose or bolt 8 of the lock 9 mounted on the door 10. The bolt 8 has a cam face 11 and a locking face 12.

The casing 2 has two rectangular projections 13 and 14 in alinement with one another, but spaced from one another and from the longitudinal edges of the casing 2.

The rectangular projections 13 and 14 extend from the plane wall 15, which in turn lis spaced from the outer edges 16 of the side walls 17, 18 and 19 of the casing 2. The plate 3 is preferably composed of a strike bar 20 formed at the ends of the arms 21 and 22 extending from the parallel cross pieces 23 and 24. The cross pieces 23 and 24 are spaced from one another a distance conforming substantially to the width of the projections 13 and 14 to receive the projections 13 and 14 as shown in Fig. 3. The H-spring 4 has a cross piece 25 from which in substantially opposite directions extend the fingers 26, 27, 28 and 29, the fingers 26 and 27 extending in one direction and the fingers 28 and 29 extending in substantially the opposite direction. Furthermore, the fingers 26 and 27 on the one hand, and the iingers 28 and 29 on the other hand, flare outwardly away from one side of the cross piece 25 to form a flattened out V shape as shown in Fig. 4. The cross piece 25 conforms substantially to the space between the projecrice tions 13 and 14 of the casing 2, this cross piece 25 being positioned in that space when assembled as shown in Fig. 3. The overall distance subtended by the ends of the fingers 26 and 27 on the one hand and the fingers 28 and 29 on the other hand conforms substantially to the length of the plate 3. Furthermore, the ends of the fingers 26, 27, 28 and 29 are slightly curved as shown at 30 in Fig. 4, so jthat in actual use, the portions of the spring 4 adjacent the ends of the cross piece 25 engage the wall 15, and the curved portions 30 of the fingers 26, 27, 28 and 29 engage the inner face of the cover plate 5. The cover plate 5 as shown preferably tits into the recesses 31 and32 so that the outer face of the cover plate 5 is flush with the outer edges 16 of the side walls 17, 18 and 19. When attached to the frame 7 fastening means such as the screws 33 pass through the openings 34 and 35 of the casing 2 and the alined openings 36 and 37 of the cover plate 5.

In actual use when closing the door 10, the cam face 11 of the bolt 8 will engage the strike bar 20, deflect the same against the tension of the spring 4, and then when the bolt 8 clears the bar 20 allow the plate 3 and therewith the bar 20 to return to extended position in engagement with the locking face 12 of the bolt 8. If properly proportioned and tted one to the other as shown, then when the nose 8 clears the strike bar 20, while passing through the path of movement illustrated by the curve 38 shown in Fig. 5, the arm 3 after having been deflected will hug the locking face 12 of the nose 8 and take up the clearance provided to enable the nose 8 to return to extended position and thus contribute to the elimination in clearance which might cause rattle between the door 10 and the frame 7 when closed.

Since the nose 8 is spring-pressed, that is, is normally maintained in extended position by the springs 39 shown in Fig. 2, the yieldability required to enable the strike bar 20 to clear the nose 8 will not necessarily be contributed solely by the strike plate 3. On the other hand, when it is desired to open the door 10, it will only be necessary to turn either the handle 40 or the handle 41 to retract the nose 8 to clear the strike bar 20.

In the present instance the bulge or cross piece 25 of the flat spring 4 will engage an abutment such as the strike plate 3 and the end portions 30 will engage the cover plate 5, as distinguished from the copending application executed contemporaneously herewith, where the bulge of the at spring engages the cover plate and the end portions of the at spring engage an abutment such as the strike bar.

It is obvious that various changes and modifications may be made to the details of construction without departing from the general spirit of the invention as set forth in the appended claims.

I claim:

1. A strike for cooperation with a lock bolt having a cam face and a locking face, said strike comprising a casing having a top wall and a side having an opening therein, a cover engaging said casing extending over a part of said opening and forming a chamber with two openings in said side of said casing in communication with said chamber, a plate floatingly mounted in said casing and having two arms, each of said arms extending through one of said two openings having an inner portion disposed in said chamber inengagement with said top Wall, said top wall serving asa fulcrum for the inner end of said inner portion and having a strike bar at the outer ends of said two arms disposed on the outside of said casing alongside of said two openings and parallel to said inner end, and a flat spring floatingly mounted in said chamber engaging and maintaining said inner portion of said plate against said top wall and maintaining said strike bar in extended position but yieldable to permit said strike bar to be de- 3 fiected when engaged by the cam face of said bolt and in turn to return said strike bar to extended position for clearing said bolt thereupon snugly to engage the locking face of said bolt.

2. The combination as set forth in claim 1 in which said casing has two projections in said chamber, and said spring is an H-shaped at spring extending part way around said projections to anchor said flat spring in place.v

3. The combination as set forth in claim 1 in which said casing has two projections in said chamber and said spring is an H-shaped flat spring extending part Way around said projections to anchor said at spring in place, said spring being V-shaped in cross section with its ends flaring away from its intermediate portion and said ends engaging said cover and said intermediate portion engaging said inner portion of said plate.

References Cited in the file of this patent UNITED STATES PATENTS 33,022 Morton Dec. 22, 1885 718,002 Keller Jan. 6, 1903 1,663,300 Halper Mar. 20, 1928 FOREIGN PATENTS 51,011 Netherlands Sept. 15, 1941 603,689 Great Britain June 21, 1948 

